The global diamond business sank deeper in 2025 as weak demand, cheap lab-grown alternatives and geopolitical tensions combined to shake traditional mining to its core. The world’s largest diamond miner, De Beers, posted a dramatic revenue drop, stocked up about $2 billion in unsold natural stones and announced plans to cut more than 1,000 jobs across major operations as markets slowed. The announcement came as parent Anglo American (LON: AAL) moved to sell De Beers and later said it would merge with Canada ...